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Chiayi City, Taiwan

Full City Profile

263,188 Population 20,822/sq mi density
148 ft Elevation 45 meters
74°F Avg Temperature 23°C
Chiayi City has a warm climate with an average annual temperature of 74°F (23°C). Winters average 62°F in January while summers reach 83°F in July. The area gets 216 sunny days per year. Annual precipitation totals 72.9 inches. The area receives 0.0 inches of snow annually.

Temperature

62°F Jan (17°C) 83°F Jul (28°C)
Annual Average73.6°F
36% above US avg
January Average62°F (17°C)
July Average83°F (28°C)
Sunny Days216 days/yr

Geography

Elevation148 ft (45 m)
Area12.6 sq mi (32.7 km²)
Population Density20,822/sq mi
Coordinates23.4792°N, 120.4489°W
TimezoneAsia/Taipei

Precipitation & Snow

Annual Rainfall 72.9"
92% above US avg
Snowfall 0.0"
Wettest Month (Aug) 16.61"
Driest Month (Nov) 0.63"

Air Quality

Earthquake History

1,808 earthquakes (M2.5+) within 150 km since 1990. Strongest: M7.7. Most recent: M0.0 on Aug 29, 2025.

Sep 20, 1999 21 km S of Puli, Taiwan M7.7 63 km
Apr 2, 2024 15 km S of Hualien City, Taiwan M7.4 124 km
Sep 18, 2022 90 km E of Yujing, Taiwan M6.9 99 km
Dec 13, 1990 28 km S of Hualien City, Taiwan M6.7 123 km
Mar 22, 2022 65 km S of Hualien City, Taiwan M6.7 119 km
Sep 17, 2022 96 km SE of Lugu, Taiwan M6.5 106 km
Sep 25, 1999 31 km SE of Puli, Taiwan M6.5 78 km
Feb 6, 2018 18 km NNE of Hualien City, Taiwan M6.4 143 km
Apr 3, 2024 15 km NNE of Hualien City, Taiwan M6.4 143 km
Jun 10, 2000 29 km ESE of Puli, Taiwan M6.4 89 km
Sep 22, 1999 33 km SE of Puli, Taiwan M6.4 78 km
Sep 20, 1999 44 km SSE of Lugu, Taiwan M6.4 54 km
Dec 19, 2009 20 km S of Hualien City, Taiwan M6.4 123 km
Feb 5, 2016 25 km SE of Yujing, Taiwan M6.4 62 km
Oct 31, 2013 46 km SSW of Hualien City, Taiwan M6.3 101 km
Mar 4, 2010 41 km SE of Yujing, Taiwan M6.3 72 km
Dec 13, 1990 7 km SSE of Hualien City, Taiwan M6.3 130 km
Nov 1, 1999 66 km S of Hualien City, Taiwan M6.3 110 km
Sep 20, 1999 54 km SW of Hualien City, Taiwan M6.3 87 km
Feb 13, 2015 Taiwan region M6.2 137 km
Source: USGS (M2.5+, 1990–2025)

Hurricane History

92 hurricanes (Cat 1+) within 500 km since 1980. Strongest: Category 5.

Year Name Category Closest
2025 Podul Category 2 66 km
2025 Danas Category 2 36 km
2024 Kong-rey Category 4 20 km
2024 Krathon Category 4 98 km
2024 Gaemi Category 4 128 km
2023 Koinu Category 4 160 km
2023 Haikui Category 3 73 km
2023 Doksuri Category 3 158 km
2021 Chanthu Category 4 176 km
2020 Mekkhala Category 1 239 km
2019 Mitag Category 2 251 km
2017 Nesat Category 2 165 km
2016 Meranti Category 5 120 km
2016 Nepartak Category 5 55 km
2016 Megi Category 4 58 km
2016 Malakas Category 4 260 km
2015 Dujuan Category 4 69 km
2015 Soudelor Category 3 47 km
2015 Noul Category 3 274 km
2015 Goni Category 1 293 km
Source: NOAA IBTrACS (Cat 1+, 1980–2026)

Tsunami History

6 tsunamis recorded within 500 km. Highest wave on record: 30.0 m (98 ft).

Year Location Cause Max Wave Deaths Distance
1781 KAOHSIUNG Unknown 30.0 m 1 81 km
2024 E. TAIWAN-RYUKYU ISLANDS Earthquake 1.0 m 20 120 km
1917 TAIWAN Earthquake 0.5 m — 122 km
1986 TAIWAN Earthquake 0.3 m 15 124 km
1951 TAIWAN Earthquake 0.3 m 68 132 km
1990 TAIWAN Earthquake 0.0 m — 123 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month Avg Temperature Precipitation Summary
January 62°F (17°C) 1.1 in Coldest
February 63°F (17°C) 1.8 in
March 68°F (20°C) 2.7 in
April 74°F (23°C) 3.8 in
May 78°F (26°C) 8.4 in
June 82°F (28°C) 13.9 in
July 83°F (28°C) 14.4 in Warmest
August 82°F (28°C) 16.6 in Wettest
September 81°F (27°C) 7.6 in
October 77°F (25°C) 1.2 in
November 71°F (22°C) 0.6 in Driest
December 64°F (18°C) 0.8 in

Chiayi City has a seasonal temperature swing of 21°F / from 62°F in January to 83°F in July. Total annual precipitation is 72.9 inches, with August being the wettest month (16.6") and November the driest (0.6").

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